13520531052045 has 80 divisors (see below), whose sum is σ = 24660315440640. Its totient is φ = 7085072592000.

The previous prime is 13520531052029. The next prime is 13520531052053. The reversal of 13520531052045 is 54025013502531.

13520531052045 is a `hidden beast` number, since 1 + 3 + 520 + 5 + 3 + 105 + 20 + 4 + 5 = 666.

It is not a de Polignac number, because 13520531052045 - 2⁴ = 13520531052029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 46474135 + ... + 46764155.

It is an arithmetic number, because the mean of its divisors is an integer number (308253943008).

Almost surely, 2^{13520531052045} is an apocalyptic number.

13520531052045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13520531052045 is a deficient number, since it is larger than the sum of its proper divisors (11139784388595).

13520531052045 is a wasteful number, since it uses less digits than its factorization.

13520531052045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292048 (or 292039 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

Adding to 13520531052045 its reverse (54025013502531), we get a palindrome (67545544554576).

The spelling of 13520531052045 in words is "thirteen trillion, five hundred twenty billion, five hundred thirty-one million, fifty-two thousand, forty-five".